practise.html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Navbar</title>
<style>
 
  .container{
   border: 2px solid red;
   height:400px;
   display:flex;
   flex-direction:row ;
  }
  .box{
    border:2px solid green;
    margin:10px 0px;
    
  }
</style>

</head>
<body>
 <div class="container">
  <div class="box">Home</div>
  <div class="box">Contact</div>
  <div class="box">Search</div>
  <div class="box">1</div>
  <div class="box">2</div>
  <div class="box">3</div>
  <div class="box">4</div>
  <div class="box">5</div>
 </div>
</body>
</html>